diff --git a/src/Database/Concerns/HasRelationships.php b/src/Database/Concerns/HasRelationships.php
index ecf581b9c..9d57f23df 100644
--- a/src/Database/Concerns/HasRelationships.php
+++ b/src/Database/Concerns/HasRelationships.php
@@ -326,6 +326,11 @@ protected function handleRelation($relationName)
             case 'belongsToMany':
                 $relation = $this->validateRelationArgs($relationName, ['table', 'key', 'otherKey', 'parentKey', 'relatedKey', 'pivot', 'timestamps']);
                 $relationObj = $this->$relationType($relation[0], $relation['table'], $relation['key'], $relation['otherKey'], $relation['parentKey'], $relation['relatedKey'], $relationName);
+
+                if (isset($relation['pivotModel'])) {
+                    $relationObj->using($relation['pivotModel']);
+                }
+
                 break;
 
             case 'morphTo':
diff --git a/src/Database/Relations/Concerns/BelongsOrMorphsToMany.php b/src/Database/Relations/Concerns/BelongsOrMorphsToMany.php
index 7e346d3d6..d7dffff39 100644
--- a/src/Database/Relations/Concerns/BelongsOrMorphsToMany.php
+++ b/src/Database/Relations/Concerns/BelongsOrMorphsToMany.php
@@ -119,9 +119,6 @@ public function create(array $attributes = [], array $pivotData = [], $sessionKe
      */
     public function attach($id, array $attributes = [], $touch = true)
     {
-        $insertData = $this->formatAttachRecords($this->parseIds($id), $attributes);
-        $attachedIdList = array_pluck($insertData, $this->relatedPivotKey);
-
         /**
          * @event model.relation.beforeAttach
          * Called before creating a new relation between models (only for BelongsToMany relation)
@@ -136,14 +133,21 @@ public function attach($id, array $attributes = [], $touch = true)
          *     });
          *
          */
-        if ($this->parent->fireEvent('model.relation.beforeAttach', [$this->relationName, $attachedIdList, $insertData], true) === false) {
+        if ($this->parent->fireEvent('model.relation.beforeAttach', [$this->relationName, $id, $attributes], true) === false) {
             return;
         }
 
+        $insertData = $this->formatAttachRecords($this->parseIds($id), $attributes);
+        $attachedIdList = array_pluck($insertData, $this->relatedPivotKey);
+
         // Here we will insert the attachment records into the pivot table. Once we have
         // inserted the records, we will touch the relationships if necessary and the
         // function will return. We can parse the IDs before inserting the records.
-        $this->newPivotStatement()->insert($insertData);
+        if ($this->using) {
+            $this->attachUsingCustomClass($id, $attributes);
+        } else {
+            $this->newPivotStatement()->insert($insertData);
+        }
 
         if ($touch) {
             $this->touchIfTouching();